First benchmark section support patches pushed

Hi all, I just pushed 5 patches containing the beginnings of an implementation of a new 'benchmark' section: Tue Oct 11 15:28:49 NDT 2011 Johan Tibell * Add a Benchmark data type for representing 'benchmark' sections Tue Oct 11 16:45:15 NDT 2011 Johan Tibell * Parse 'benchmark' sections and handle configurations (flags) for benchmarks Tue Oct 11 16:53:49 NDT 2011 Johan Tibell * Parse the --{enable,disable}-benchmarks command line flag Tue Oct 11 17:18:38 NDT 2011 Johan Tibell * Implement 'configure' and preprocessing for benchmarks Tue Oct 11 17:28:47 NDT 2011 Johan Tibell * Add unit test for benchmark section I've implemented everything up to (and including) 'configure'. I've also added a unit test. Next up is actual build support and a few things surrounding tarball generation, installation, etc. Cheers, Johan